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Get Full Access to Conceptual Physics - 12 Edition - Chapter 3 - Problem 7e
Get Full Access to Conceptual Physics - 12 Edition - Chapter 3 - Problem 7e

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You’re in a car traveling at some specified speed limit.

ISBN: 9780321909107 29

Solution for problem 7E Chapter 3

Conceptual Physics | 12th Edition

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Problem 7E

You’re in a car traveling at some specified speed limit. You see a car moving at the same speed coming toward you. How fast is the car approaching you, compared with the speed limit?

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Step 1 of 3

Solution 7E Suppose that the car I am in is travelling at 50 km/h. The other car coming toward me also has the same speed. That means the car will have a speed of 50 km/h with respect to the ground. But since I am also inside a moving car , hence my observation will measure the other car’s speed as = (50 + 50) km/h = 100 km/h. The car’s approaching speed as compared to my car’s speed limit will be twice the latter.

Step 2 of 3

Step 3 of 3

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